Home - News ( United States | United Kingdom | Italy | Germany ) - Football scores

Showing content from https://docs.deno.com/runtime/reference/env_variables/ below:

Environment variables

There are a few ways to use environment variables in Deno:

The Deno runtime offers built-in support for environment variables with Deno.env.

Deno.env has getter and setter methods. Here is example usage:

Deno.env.set("FIREBASE_API_KEY", "examplekey123");
Deno.env.set("FIREBASE_AUTH_DOMAIN", "firebasedomain.com");

console.log(Deno.env.get("FIREBASE_API_KEY")); 
console.log(Deno.env.get("FIREBASE_AUTH_DOMAIN")); 
console.log(Deno.env.has("FIREBASE_AUTH_DOMAIN")); 

Deno also supports .env files. You can tell Deno to read environment variables from .env with the --env-file flag, for example:

deno run --env-file main.ts

This will read the .env file from the current working directory or the first parent directory that contains one. If you want to load environment variables from a different file, you can specify that file as a parameter to the flag.

You can pass multiple --env-file flags (e.g., deno run --env-file=.env.one --env-file=.env.two --allow-env <script>) to load variables from multiple files.

Note

When multiple declarations for the same environment variable exist within a single .env file, the first occurrence is applied. However, if the same variable is defined across multiple .env files (using multiple --env-file arguments), the value from the last file specified takes precedence. This means that the first occurrence found in the last .env file listed will be applied.

Alternately, the dotenv package in the standard library will load environment variables from .env as well.

Let's say you have an .env file that looks like this:

Import the load module to auto-import from the .env file and into the process environment.

import "jsr:@std/dotenv/load";

console.log(Deno.env.get("GREETING")); 

Further documentation for .env handling can be found in the @std/dotenv documentation.

As with other CLI commands, you can set environment variables before running a command like so:

MY_VAR="my value" deno run main.ts

This can be useful when you want to vary a task based on an environment variable, and can be helpfully combined with deno task commands like so:

deno.json

{

  ...
  
  "tasks": {
    "build:full": {
      "description": "Build the site with all features",
      "command": "BUILD_TYPE=FULL deno run main.ts"
    },
    "build:light": {
      "description": "Build the site without expensive operations",
      "command": "BUILD_TYPE=LIGHT deno run main.ts"
    }
  }
}

The Deno Standard Library has a std/cli module for parsing command line arguments. Please refer to the module for documentation and examples.

The Deno runtime has these special environment variables.

RetroSearch is an open source project built by @garambo | Open a GitHub Issue

Search and Browse the WWW like it's 1997 | Search results from DuckDuckGo

HTML: 3.2 | Encoding: UTF-8 | Version: 0.7.4